import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.List;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.premium.game.util.Util;
import com.premium.game.model.L2MonsterInstance;
import com.premium.game.model.L2World;
import com.premium.game.model.L2Skill;

public class TimeUtils {
  private static final SimpleDateFormat Pu = new SimpleDateFormat("HH:mm dd.MM.yyyy");
  
  private static final SimpleDateFormat axh = new SimpleDateFormat("HH:mm dd.MM.yyyy");
  
  public enum DeclensionKey {
	  DAYS, HOUR, MINUTES, PIECE, POINT;
	}
  
  public static String declension(long paramLong, DeclensionKey paramDeclensionKey) {
	    String str1 = "";
	    String str2 = "";
	    String str3 = "";
	    switch (paramDeclensionKey) {
	      case DAYS:
	        str1 = "Day";
	        str2 = "Days";
	        str3 = "Days";
	        break;
	      case HOUR:
	        str1 = "Hour";
	        str2 = "Hours";
	        str3 = "Hours";
	        break;
	      case MINUTES:
	        str1 = "Minute";
	        str2 = "Minutes";
	        str3 = "Minutes";
	        break;
	      case PIECE:
	        str1 = "Piece";
	        str2 = "Pieces";
	        str3 = "Pieces";
	        break;
	      case POINT:
	        str1 = "Point";
	        str2 = "Points";
	        str3 = "Points";
	        break;
	    } 
	    if (paramLong > 100L)
	      paramLong %= 100L; 
	    if (paramLong > 20L)
	      paramLong %= 10L; 
	    return (paramLong == 1L) ? str1 : ((paramLong == 2L || paramLong == 3L || paramLong == 4L) ? str2 : str3);
	  }
  
  public static String toSimpleFormat(Calendar paramCalendar) {
    return Pu.format(paramCalendar.getTime());
  }
  
  public static String toSimpleFormat(long paramLong) {
    return Pu.format(Long.valueOf(paramLong));
  }
  
  public static String toHeroRecordFormat(long paramLong) {
    return axh.format(Long.valueOf(paramLong));
  }
  
  public static String formatTime(int paramInt, boolean paramBoolean) {
    String str;
    int i = paramInt / 86400;
    int j = (paramInt - i * 24 * 3600) / 3600;
    int k = (paramInt - i * 24 * 3600 - j * 3600) / 60;
    if (i >= 1) {
      if (j < 1 || paramBoolean) {
        str = i + " " + declension(i, DeclensionKey.DAYS);
      } else {
        str = i + " " + declension(i, DeclensionKey.DAYS) + " " + j + " " + declension(j, DeclensionKey.HOUR);
      } 
    } else if (j >= 1) {
      if (k < 1 || paramBoolean) {
        str = j + " " + declension(j, DeclensionKey.HOUR);
      } else {
        str = j + " " + declension(j, DeclensionKey.HOUR) + " " + k + " " + declension(k, DeclensionKey.MINUTES);
      } 
    } else {
      str = k + " " + declension(k, DeclensionKey.MINUTES);
    } 
    return str;
  }
  
  public static long parse(String paramString) throws ParseException {
    return Pu.parse(paramString).getTime();
  }

  public final List<L2MonsterInstance> getAroundNpc() {
    // Implementar cache de alvos próximos
    if (targetCache.isValid()) {
        return targetCache.getTargets();
    }
    
    // Otimizar busca usando QuadTree ou estrutura espacial
    List<L2MonsterInstance> targets = new ArrayList<>();
    L2World.getVisibleObjects(player, getFarmRadius())
        .stream()
        .filter(this::isValidTarget)
        .sorted(Comparator.comparingDouble(this::getTargetPriority))
        .limit(MAX_TARGETS)
        .forEach(targets::add);
        
    targetCache.update(targets);
    return targets;
  }

  // Implementar limpeza periódica de cache
  private void cleanupCache() {
    // Limpar caches não utilizados
    skillCooldowns.entrySet().removeIf(entry -> 
        System.currentTimeMillis() - entry.getValue() > MAX_CACHE_TIME);
    
    // Limpar alvos obsoletos
    if (getCommittedTarget() != null && getCommittedTarget().isDead()) {
        setCommittedTarget(null);
    }
  }

  protected boolean doTryUseAttackSkillSpell() {
    L2Skill skill = getAutoFarmContext().nextAttackSkill(getCommittedTarget(), getExtraDelay());
    if (skill != null && !skill.isInReuse()) {
        long lastUseTime = skillCooldowns.getOrDefault(skill.getId(), 0L);
        long currentTime = System.currentTimeMillis();
        if (currentTime - lastUseTime >= skill.getReuseDelay()) {
            useMagicSkill(skill, false);
            skillCooldowns.put(skill.getId(), currentTime);
            return true;
        }
    }
    return false;
  }
}

public class BaseFarmTask {
    private static final int MAX_CONSECUTIVE_FAILURES = 3;
    private int consecutiveFailures = 0;
    
    protected void handleTaskExecution() {
        try {
            // Adicionar timeout para operações
            CompletableFuture.runAsync(() -> runImpl())
                .orTimeout(5, TimeUnit.SECONDS)
                .exceptionally(e -> {
                    handleFailure();
                    return null;
                });
        } catch (Exception e) {
            handleFailure();
        }
    }
    
    private void handleFailure() {
        consecutiveFailures++;
        if (consecutiveFailures >= MAX_CONSECUTIVE_FAILURES) {
            // Forçar pausa para recuperação
            getAutoFarmContext().pauseFarming(1);
            consecutiveFailures = 0;
        }
    }
}

public class AutoFarmContext {
    private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
    private final Map<Integer, SkillUsageStats> skillStats = new ConcurrentHashMap<>();
    
    // Monitorar uso de recursos
    public void trackResourceUsage() {
        scheduler.scheduleAtFixedRate(() -> {
            // Verificar memória
            if (Runtime.getRuntime().freeMemory() < MINIMUM_FREE_MEMORY) {
                System.gc();
                pauseFarming(1);
            }
            
            // Verificar CPU
            if (getCPUUsage() > MAX_CPU_USAGE) {
                pauseFarming(1);
            }
        }, 1, 1, TimeUnit.MINUTES);
    }
}